10387561581388 has 6 divisors (see below), whose sum is σ = 18178232767436. Its totient is φ = 5193780790692.

The previous prime is 10387561581301. The next prime is 10387561581407. The reversal of 10387561581388 is 88318516578301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1298445197670 + ... + 1298445197677.

Almost surely, 2^{10387561581388} is an apocalyptic number.

It is an amenable number.

10387561581388 is a deficient number, since it is larger than the sum of its proper divisors (7790671186048).

10387561581388 is a wasteful number, since it uses less digits than its factorization.

10387561581388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596890395351 (or 2596890395349 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 64.

The spelling of 10387561581388 in words is "ten trillion, three hundred eighty-seven billion, five hundred sixty-one million, five hundred eighty-one thousand, three hundred eighty-eight".